[tor-bugs] #27389 [Core Tor/Tor]: Appveyor Windows 64-bit builds fail because the compiler is broken

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#27389: Appveyor Windows 64-bit builds fail because the compiler is broken
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 Reporter:  teor                              |          Owner:  teor
     Type:  defect                            |         Status:
                                              |  needs_review
 Priority:  Medium                            |      Milestone:  Tor:
                                              |  0.3.4.x-final
Component:  Core Tor/Tor                      |        Version:  Tor:
                                              |  0.3.4.1-alpha
 Severity:  Major                             |     Resolution:
 Keywords:  035-must, 034-must, 034-backport  |  Actual Points:
Parent ID:                                    |         Points:
 Reviewer:                                    |        Sponsor:
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Changes (by teor):

 * status:  assigned => needs_review


Comment:

 Replying to [comment:3 nickm]:
 > This has come up before, but as an issue caused by failures during
 configure.  If this is failing, it probably means one of two things:
 >
 >    1. that the compiler itself is unreliable.
 >    2. That we have something happening during configure that is making
 all the subsequent compiler calls fail.
 >
 > In this case, it would be extremely handy for us to look at config.log,
 so that we can make sure this isn't our bug, before we go ahead and allow
 failures with this build.

 All builds are failing, even on code that passed before Friday. So it
 can't be caused by new code that we merged. I checked before I logged this
 ticket. (I'm sorry I didn't mention that in the ticket.)

 I opened #27432 to deal with the underlying issue that all our compiled
 executables crash on x86_64 Appveyor.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/27389#comment:5>
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